Device for automatically regulating heating mediums by an expansible fluid in a thermostat.



E. SEGES KRL DEVICE FOR AUTOMATICALLY BBGULATING HEATING MEDIUMS BY AN EXPANSIBLE FLUID IN A THERMOSTAT.

APPLICATION FILED SEPT. 28, 19081,

Paten ted Feb.2 2, 1910.

' employed to govern Unrrnn 's'ra'rns aren't orricn ERNST SEGESVARY, OF BEEMEN, GERMANY.

DEVICE FOR AUTOMATICALLY BEGULATIING HEATING MEDIUMS BY A1\T EXPANSIBLE V FLUID IN a rnnn rosrn'r.

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Application filed September 28, 1908. Serial No. 455,170.

lating Heating Mediums by an Expansi 1e Fluid in a Thermostat, ,of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a device for regulating automatically the passage of heating medium through 'a valve, and the essential feature of the invention is embodied in the use of a thermostat containing a readilyvolatilizing fluid for regulating the supply of the volatile liquid to the valve for the purpose to be hereinafter more fully described.

Prior to this invention, thermostats containing a readily-volatilizing fluid have been the admission of heating medium through a valve, but the volatile liquid was sealed in a vessel having a flexible side contacting the valve and permanently exposed to the heating medium.

This invention obviates the permanent exosure of a sealed vessel containing the volatile-liquid to the heating medium, and subjects the volatile liquid to the influence of the heating medium in the valve only at intervals of a predetermined temperature of the atmosphere in the vicinity of the thermostat.

In the drawings forming part of this specification, in which like letters of reference denote like parts wherever they occur,

' Figure 1 is a sectional view of the im roved said valve chamber,

valve device; and Fig. 2 is a sectiona View of the thermostat.

The improved valve device shown in Fig. 1 is formed of a suitable casing having a valve chamber containing a valve 0 normally held ofi' its seat by a spring 7, said valve casing having a diaphragm chamber, divided by a diaphragm b into a chamber opening into into which said valve protrudes, and a closed or pressure chamber d between said diaphragm and the rigid plate 0. The stopper 9 when removedal ws the regulator to be charged with a volatile liquid, for example, ether.

The .form of thermostat used in connection with the valve device is constructed with the casing I having a stopper m for sired degree of temperature.

charging the closed chamber with ether located adjacent to the diaphragm h.

The pipe at screwed into opening a connects the closedchamber containing the ether of the thermostat with the said closed chamber of the valve device. A protecting cover 0 is provided, haviqg a graduated scale 9 mounted thereon. set-hand p fastened to the head of the set-screw 70, can be set at any desired degree of temperature on the said scale. The spring 2', holds the diaphragm h in engagement vpith the end of said set-screw.

This invention is not limited to the precise structural details, the purpose being to procure means for automatically introducing a volatile liquid into a closed chamber 0 a valve device to regulate same.

The operation of the device is as follows: The thermostat, located in a dwelling-room,

and connected to the valve device is charged with ether through either plug 9 or m, depending upon their relative positions, and the set-hand of the thermostat If the temperature of the room rises above the desired degree, the expansion of the ether in the thermostat due to such increase of temperature causes a die or dro s of ether to enter the closed chamber d o the valve device through the pipe a. The ether, being a readily-vaporizing liquid and having a boiling oint less than the heating medium, immediately vaporizes in contacting the diaphragm b, which is heated by the heating medium, and on account of the large increase in volume which occurs on a liquid being converted into vapor, the increase in the volume in the closed chamber causes the diaphragm b to bulge outwardly, ipressing the valve against its seat, cutting o the supply of heating medium. If the temperature of the room falls below the desired dc rec, the ether contracts and draws the fluic in the pipe back, creating a vacuum therein, which draws the vaporizin other from the closed chamber d into sai pipe, and allows the spring 7 to unseat the valve. As said pipe is not heated, the vaporizing ether condenses when drawn into said 'pipe from the closed chamber d.

In the case of instruments for which ether is not suitable for a thermostat li uid, another liquid must be em loyed for t e same. The evaporating liquid 15 then separated by Patented Feb. 22, 1910.

set at a (lemeans of a special diaphragm from the thermostat liquid which transmits the expansion,

A,, thermostat, comprising in combination with a valve and a valve-casing located in a fluid heating system, said valve being normally open, a diaphra bearing wlth one side on said valve, an forming a chamber at its opposite side, a second chamber in distant communication with said first chamber and adapted to contain a volatile fluid and means for manually adjusting the volume of fluid in said second chamber whereby the flow in response to difierent temperatures and is of fluid from said second chamber is varied volatilized in said first chamber by direct 'contact'of the heating medium with said diaphragm, said volume adjusting means com prising a diaphragm separating one end of said second chamber, a spring pressed lunger carried by said casing withm said 0 am- 'ERNsTIs-EeEsvARY.

' Witnesses:

HANS Won-n, O'rm HOFMANNJ. 

